Fujitsu Arrows NX F-01J Instruction Manual page 20

・
Do not cover the proximity sensor with film or sticker or
dirty it.
- May cause the functions that use the proximity sensor to
malfunction.
- For the position of the proximity sensor, refer to the
following.
→P30 "Part names and functions"
・
The internal battery is a consumable part.
- Battery life varies depending on usage conditions, etc., but
it is time to change battery pack when the usage time has
become extremely short even though the battery pack has
been fully charged. For replacement of the battery pack,
contact "Technical Inquiries & Repairs" (in Japanese only)
on the last page of this manual or DOCOMO specified
repair office.
・
Charge the battery in an area within the proper ambient
temperature range (5-35℃).
・
The operation time provided by the internal battery varies
by the operating environment and internal battery
deterioration.
・
The battery pack may swell out as it comes to near the end
of its lifetime depending on the usage conditions.
Note that malfunctions deemed to be caused by battery
swell are not covered by the warranty or impossible to
repair. Since these malfunctions are not under warranty,
even when repair is possible, it will be done at the user's
expense.
・
Be careful especially about the followings when storing the
terminal.
- Storing under the state of the full charge (right after
charging ends)
- The battery has run out (the terminal cannot be turned on)
They may cause the internal battery performance to be
degraded or its lifetime to be shortened.
A recommended battery level to store the terminal is
approximately 40% of remaining battery level as a guide.
・
The terminal has the following type of battery pack.
Display
Li-ion 00 Li-ion battery
18
Battery type
Contents/Precautions